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        color:orange;
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    a:visited{
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    a:hover{
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    a:active{
        font-weight: bold;
        font-size: 32px;
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    a{
        text-decoration: none;
        color: #ccc;

    }
    a:hover{
        color: orange;
    }
    div{
        width :200px;
        height: 200px;
        background-color:orange;
    }
    div:hover{
        width: 300px;
        height: 300px;
        background-color: green;
    }
    input{
        width: 300px;
        height: 100px;
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    input:focus{
        /* 取消表单控件的轮廓线 */
    
        outline: none;
    }   

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